Merge branches 'fiq' (early part), 'fixes', 'l2c' (early part) and 'misc' into for-next

This commit is contained in:
Russell King
2014-10-02 21:47:02 +01:00
473 changed files with 4150 additions and 2245 deletions
@@ -2545,6 +2545,30 @@ fields changed from _s32 to _u32.
</orderedlist>
</section>
<section>
<title>V4L2 in Linux 3.16</title>
<orderedlist>
<listitem>
<para>Added event V4L2_EVENT_SOURCE_CHANGE.
</para>
</listitem>
</orderedlist>
</section>
<section>
<title>V4L2 in Linux 3.17</title>
<orderedlist>
<listitem>
<para>Extended &v4l2-pix-format;. Added format flags.
</para>
</listitem>
<listitem>
<para>Added compound control types and &VIDIOC-QUERY-EXT-CTRL;.
</para>
</listitem>
</orderedlist>
</section>
<section id="other">
<title>Relation of V4L2 to other Linux multimedia APIs</title>
+29 -6
View File
@@ -29,9 +29,12 @@ can suspend execution until the driver has captured data or is ready
to accept data for output.</para>
<para>When streaming I/O has been negotiated this function waits
until a buffer has been filled or displayed and can be dequeued with
the &VIDIOC-DQBUF; ioctl. When buffers are already in the outgoing
queue of the driver the function returns immediately.</para>
until a buffer has been filled by the capture device and can be dequeued
with the &VIDIOC-DQBUF; ioctl. For output devices this function waits
until the device is ready to accept a new buffer to be queued up with
the &VIDIOC-QBUF; ioctl for display. When buffers are already in the outgoing
queue of the driver (capture) or the incoming queue isn't full (display)
the function returns immediately.</para>
<para>On success <function>poll()</function> returns the number of
file descriptors that have been selected (that is, file descriptors
@@ -44,10 +47,22 @@ Capture devices set the <constant>POLLIN</constant> and
flags. When the function timed out it returns a value of zero, on
failure it returns <returnvalue>-1</returnvalue> and the
<varname>errno</varname> variable is set appropriately. When the
application did not call &VIDIOC-QBUF; or &VIDIOC-STREAMON; yet the
application did not call &VIDIOC-STREAMON; the
<function>poll()</function> function succeeds, but sets the
<constant>POLLERR</constant> flag in the
<structfield>revents</structfield> field.</para>
<structfield>revents</structfield> field. When the
application has called &VIDIOC-STREAMON; for a capture device but hasn't
yet called &VIDIOC-QBUF;, the <function>poll()</function> function
succeeds and sets the <constant>POLLERR</constant> flag in the
<structfield>revents</structfield> field. For output devices this
same situation will cause <function>poll()</function> to succeed
as well, but it sets the <constant>POLLOUT</constant> and
<constant>POLLWRNORM</constant> flags in the <structfield>revents</structfield>
field.</para>
<para>If an event occurred (see &VIDIOC-DQEVENT;) then
<constant>POLLPRI</constant> will be set in the <structfield>revents</structfield>
field and <function>poll()</function> will return.</para>
<para>When use of the <function>read()</function> function has
been negotiated and the driver does not capture yet, the
@@ -58,10 +73,18 @@ continuously (as opposed to, for example, still images) the function
may return immediately.</para>
<para>When use of the <function>write()</function> function has
been negotiated the <function>poll</function> function just waits
been negotiated and the driver does not stream yet, the
<function>poll</function> function starts streaming. When that fails
it returns a <constant>POLLERR</constant> as above. Otherwise it waits
until the driver is ready for a non-blocking
<function>write()</function> call.</para>
<para>If the caller is only interested in events (just
<constant>POLLPRI</constant> is set in the <structfield>events</structfield>
field), then <function>poll()</function> will <emphasis>not</emphasis>
start streaming if the driver does not stream yet. This makes it
possible to just poll for events and not for buffers.</para>
<para>All drivers implementing the <function>read()</function> or
<function>write()</function> function or streaming I/O must also
support the <function>poll()</function> function.</para>
+6 -5
View File
@@ -152,10 +152,11 @@ structs, ioctls) must be noted in more detail in the history chapter
applications. -->
<revision>
<revnumber>3.16</revnumber>
<date>2014-05-27</date>
<authorinitials>lp</authorinitials>
<revremark>Extended &v4l2-pix-format;. Added format flags.
<revnumber>3.17</revnumber>
<date>2014-08-04</date>
<authorinitials>lp, hv</authorinitials>
<revremark>Extended &v4l2-pix-format;. Added format flags. Added compound control types
and VIDIOC_QUERY_EXT_CTRL.
</revremark>
</revision>
@@ -538,7 +539,7 @@ and discussions on the V4L mailing list.</revremark>
</partinfo>
<title>Video for Linux Two API Specification</title>
<subtitle>Revision 3.14</subtitle>
<subtitle>Revision 3.17</subtitle>
<chapter id="common">
&sub-common;
@@ -119,7 +119,7 @@
</row>
<row>
<entry>&v4l2-rect;</entry>
<entry><structfield>rect</structfield></entry>
<entry><structfield>r</structfield></entry>
<entry>Selection rectangle, in pixels.</entry>
</row>
<row>
+3 -3
View File
@@ -345,14 +345,14 @@ the named feature on.
The implementation is simple.
Setting the flag 'cpuset.memory_spread_page' turns on a per-process flag
PF_SPREAD_PAGE for each task that is in that cpuset or subsequently
PFA_SPREAD_PAGE for each task that is in that cpuset or subsequently
joins that cpuset. The page allocation calls for the page cache
is modified to perform an inline check for this PF_SPREAD_PAGE task
is modified to perform an inline check for this PFA_SPREAD_PAGE task
flag, and if set, a call to a new routine cpuset_mem_spread_node()
returns the node to prefer for the allocation.
Similarly, setting 'cpuset.memory_spread_slab' turns on the flag
PF_SPREAD_SLAB, and appropriately marked slab caches will allocate
PFA_SPREAD_SLAB, and appropriately marked slab caches will allocate
pages from the node returned by cpuset_mem_spread_node().
The cpuset_mem_spread_node() routine is also simple. It uses the
@@ -2,6 +2,10 @@
ARM cores often have a separate level 2 cache controller. There are various
implementations of the L2 cache controller with compatible programming models.
Some of the properties that are just prefixed "cache-*" are taken from section
3.7.3 of the ePAPR v1.1 specification which can be found at:
https://www.power.org/wp-content/uploads/2012/06/Power_ePAPR_APPROVED_v1.1.pdf
The ARM L2 cache representation in the device tree should be done as follows:
Required properties:
@@ -44,6 +48,12 @@ Optional properties:
I/O coherent mode. Valid only when the arm,pl310-cache compatible
string is used.
- interrupts : 1 combined interrupt.
- cache-size : specifies the size in bytes of the cache
- cache-sets : specifies the number of associativity sets of the cache
- cache-block-size : specifies the size in bytes of a cache block
- cache-line-size : specifies the size in bytes of a line in the cache,
if this is not specified, the line size is assumed to be equal to the
cache block size
- cache-id-part: cache id part number to be used if it is not present
on hardware
- wt-override: If present then L2 is forced to Write through mode
@@ -11,10 +11,6 @@ Required properties:
Optional properties for main touchpad device:
- linux,gpio-keymap: An array of up to 4 entries indicating the Linux
keycode generated by each GPIO. Linux keycodes are defined in
<dt-bindings/input/input.h>.
- linux,gpio-keymap: When enabled, the SPT_GPIOPWN_T19 object sends messages
on GPIO bit changes. An array of up to 8 entries can be provided
indicating the Linux keycode mapped to each bit of the status byte,
@@ -31,7 +31,7 @@ i2s@ff890000 {
#address-cells = <1>;
#size-cells = <0>;
dmas = <&pdma1 0>, <&pdma1 1>;
dma-names = "rx", "tx";
dma-names = "tx", "rx";
clock-names = "i2s_hclk", "i2s_clk";
clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>;
};
@@ -16,11 +16,15 @@ Required Properties:
- clocks: Must contain an entry for each entry in clock-names.
- clock-names: Shall be "spiclk" for the transfer-clock, and "apb_pclk" for
the peripheral clock.
- #address-cells: should be 1.
- #size-cells: should be 0.
Optional Properties:
- dmas: DMA specifiers for tx and rx dma. See the DMA client binding,
Documentation/devicetree/bindings/dma/dma.txt
- dma-names: DMA request names should include "tx" and "rx" if present.
- #address-cells: should be 1.
- #size-cells: should be 0.
Example:
@@ -56,6 +56,9 @@ Required properties:
- fsl,data-width : should be <18> or <24>
- port: A port node with endpoint definitions as defined in
Documentation/devicetree/bindings/media/video-interfaces.txt.
On i.MX5, the internal two-input-multiplexer is used.
Due to hardware limitations, only one port (port@[0,1])
can be used for each channel (lvds-channel@[0,1], respectively)
On i.MX6, there should be four ports (port@[0-3]) that correspond
to the four LVDS multiplexer inputs.
@@ -78,6 +81,8 @@ ldb: ldb@53fa8008 {
"di0", "di1";
lvds-channel@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
fsl,data-mapping = "spwg";
fsl,data-width = <24>;
@@ -86,7 +91,9 @@ ldb: ldb@53fa8008 {
/* ... */
};
port {
port@0 {
reg = <0>;
lvds0_in: endpoint {
remote-endpoint = <&ipu_di0_lvds0>;
};
@@ -94,6 +101,8 @@ ldb: ldb@53fa8008 {
};
lvds-channel@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
fsl,data-mapping = "spwg";
fsl,data-width = <24>;
@@ -102,7 +111,9 @@ ldb: ldb@53fa8008 {
/* ... */
};
port {
port@1 {
reg = <1>;
lvds1_in: endpoint {
remote-endpoint = <&ipu_di1_lvds1>;
};
+211
View File
@@ -0,0 +1,211 @@
Open Firmware Device Tree Selftest
----------------------------------
Author: Gaurav Minocha <gaurav.minocha.os@gmail.com>
1. Introduction
This document explains how the test data required for executing OF selftest
is attached to the live tree dynamically, independent of the machine's
architecture.
It is recommended to read the following documents before moving ahead.
[1] Documentation/devicetree/usage-model.txt
[2] http://www.devicetree.org/Device_Tree_Usage
OF Selftest has been designed to test the interface (include/linux/of.h)
provided to device driver developers to fetch the device information..etc.
from the unflattened device tree data structure. This interface is used by
most of the device drivers in various use cases.
2. Test-data
The Device Tree Source file (drivers/of/testcase-data/testcases.dts) contains
the test data required for executing the unit tests automated in
drivers/of/selftests.c. Currently, following Device Tree Source Include files
(.dtsi) are included in testcase.dts:
drivers/of/testcase-data/tests-interrupts.dtsi
drivers/of/testcase-data/tests-platform.dtsi
drivers/of/testcase-data/tests-phandle.dtsi
drivers/of/testcase-data/tests-match.dtsi
When the kernel is build with OF_SELFTEST enabled, then the following make rule
$(obj)/%.dtb: $(src)/%.dts FORCE
$(call if_changed_dep, dtc)
is used to compile the DT source file (testcase.dts) into a binary blob
(testcase.dtb), also referred as flattened DT.
After that, using the following rule the binary blob above is wrapped as an
assembly file (testcase.dtb.S).
$(obj)/%.dtb.S: $(obj)/%.dtb
$(call cmd, dt_S_dtb)
The assembly file is compiled into an object file (testcase.dtb.o), and is
linked into the kernel image.
2.1. Adding the test data
Un-flattened device tree structure:
Un-flattened device tree consists of connected device_node(s) in form of a tree
structure described below.
// following struct members are used to construct the tree
struct device_node {
...
struct device_node *parent;
struct device_node *child;
struct device_node *sibling;
struct device_node *allnext; /* next in list of all nodes */
...
};
Figure 1, describes a generic structure of machines un-flattened device tree
considering only child and sibling pointers. There exists another pointer,
*parent, that is used to traverse the tree in the reverse direction. So, at
a particular level the child node and all the sibling nodes will have a parent
pointer pointing to a common node (e.g. child1, sibling2, sibling3, sibling4s
parent points to root node)
root (/)
|
child1 -> sibling2 -> sibling3 -> sibling4 -> null
| | | |
| | | null
| | |
| | child31 -> sibling32 -> null
| | | |
| | null null
| |
| child21 -> sibling22 -> sibling23 -> null
| | | |
| null null null
|
child11 -> sibling12 -> sibling13 -> sibling14 -> null
| | | |
| | | null
| | |
null null child131 -> null
|
null
Figure 1: Generic structure of un-flattened device tree
*allnext: it is used to link all the nodes of DT into a list. So, for the
above tree the list would be as follows:
root->child1->child11->sibling12->sibling13->child131->sibling14->sibling2->
child21->sibling22->sibling23->sibling3->child31->sibling32->sibling4->null
Before executing OF selftest, it is required to attach the test data to
machine's device tree (if present). So, when selftest_data_add() is called,
at first it reads the flattened device tree data linked into the kernel image
via the following kernel symbols:
__dtb_testcases_begin - address marking the start of test data blob
__dtb_testcases_end - address marking the end of test data blob
Secondly, it calls of_fdt_unflatten_device_tree() to unflatten the flattened
blob. And finally, if the machines device tree (i.e live tree) is present,
then it attaches the unflattened test data tree to the live tree, else it
attaches itself as a live device tree.
attach_node_and_children() uses of_attach_node() to attach the nodes into the
live tree as explained below. To explain the same, the test data tree described
in Figure 2 is attached to the live tree described in Figure 1.
root (/)
|
testcase-data
|
test-child0 -> test-sibling1 -> test-sibling2 -> test-sibling3 -> null
| | | |
test-child01 null null null
allnext list:
root->testcase-data->test-child0->test-child01->test-sibling1->test-sibling2
->test-sibling3->null
Figure 2: Example test data tree to be attached to live tree.
According to the scenario above, the live tree is already present so it isnt
required to attach the root(/) node. All other nodes are attached by calling
of_attach_node() on each node.
In the function of_attach_node(), the new node is attached as the child of the
given parent in live tree. But, if parent already has a child then the new node
replaces the current child and turns it into its sibling. So, when the testcase
data node is attached to the live tree above (Figure 1), the final structure is
as shown in Figure 3.
root (/)
|
testcase-data -> child1 -> sibling2 -> sibling3 -> sibling4 -> null
| | | | |
(...) | | | null
| | child31 -> sibling32 -> null
| | | |
| | null null
| |
| child21 -> sibling22 -> sibling23 -> null
| | | |
| null null null
|
child11 -> sibling12 -> sibling13 -> sibling14 -> null
| | | |
null null | null
|
child131 -> null
|
null
-----------------------------------------------------------------------
root (/)
|
testcase-data -> child1 -> sibling2 -> sibling3 -> sibling4 -> null
| | | | |
| (...) (...) (...) null
|
test-sibling3 -> test-sibling2 -> test-sibling1 -> test-child0 -> null
| | | |
null null null test-child01
Figure 3: Live device tree structure after attaching the testcase-data.
Astute readers would have noticed that test-child0 node becomes the last
sibling compared to the earlier structure (Figure 2). After attaching first
test-child0 the test-sibling1 is attached that pushes the child node
(i.e. test-child0) to become a sibling and makes itself a child node,
as mentioned above.
If a duplicate node is found (i.e. if a node with same full_name property is
already present in the live tree), then the node isnt attached rather its
properties are updated to the live trees node by calling the function
update_node_properties().
2.2. Removing the test data
Once the test case execution is complete, selftest_data_remove is called in
order to remove the device nodes attached initially (first the leaf nodes are
detached and then moving up the parent nodes are removed, and eventually the
whole tree). selftest_data_remove() calls detach_node_and_children() that uses
of_detach_node() to detach the nodes from the live device tree.
To detach a node, of_detach_node() first updates all_next linked list, by
attaching the previous nodes allnext to current nodes allnext pointer. And
then, it either updates the child pointer of given nodes parent to its
sibling or attaches the previous sibling to the given nodes sibling, as
appropriate. That is it :)
+3 -3
View File
@@ -462,9 +462,9 @@ JIT compiler
------------
The Linux kernel has a built-in BPF JIT compiler for x86_64, SPARC, PowerPC,
ARM and s390 and can be enabled through CONFIG_BPF_JIT. The JIT compiler is
transparently invoked for each attached filter from user space or for internal
kernel users if it has been previously enabled by root:
ARM, MIPS and s390 and can be enabled through CONFIG_BPF_JIT. The JIT compiler
is transparently invoked for each attached filter from user space or for
internal kernel users if it has been previously enabled by root:
echo 1 > /proc/sys/net/core/bpf_jit_enable
+2 -4
View File
@@ -3012,9 +3012,8 @@ S: Supported
F: drivers/acpi/dock.c
DOCUMENTATION
M: Randy Dunlap <rdunlap@infradead.org>
M: Jiri Kosina <jkosina@suse.cz>
L: linux-doc@vger.kernel.org
T: quilt http://www.infradead.org/~rdunlap/Doc/patches/
S: Maintained
F: Documentation/
X: Documentation/ABI/
@@ -4477,7 +4476,6 @@ M: Mika Westerberg <mika.westerberg@linux.intel.com>
L: linux-i2c@vger.kernel.org
L: linux-acpi@vger.kernel.org
S: Maintained
F: drivers/i2c/i2c-acpi.c
I2C-TAOS-EVM DRIVER
M: Jean Delvare <jdelvare@suse.de>
@@ -6876,7 +6874,7 @@ F: arch/x86/kernel/quirks.c
PCI DRIVER FOR IMX6
M: Richard Zhu <r65037@freescale.com>
M: Shawn Guo <shawn.guo@freescale.com>
M: Lucas Stach <l.stach@pengutronix.de>
L: linux-pci@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
+1 -1
View File
@@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 17
SUBLEVEL = 0
EXTRAVERSION = -rc5
EXTRAVERSION = -rc7
NAME = Shuffling Zombie Juror
# *DOCUMENTATION*
+1 -1
View File
@@ -157,6 +157,7 @@ machine-$(CONFIG_ARCH_EBSA110) += ebsa110
machine-$(CONFIG_ARCH_EFM32) += efm32
machine-$(CONFIG_ARCH_EP93XX) += ep93xx
machine-$(CONFIG_ARCH_EXYNOS) += exynos
machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
machine-$(CONFIG_ARCH_GEMINI) += gemini
machine-$(CONFIG_ARCH_HIGHBANK) += highbank
machine-$(CONFIG_ARCH_HISI) += hisi
@@ -205,7 +206,6 @@ machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
machine-$(CONFIG_ARCH_VT8500) += vt8500
machine-$(CONFIG_ARCH_W90X900) += w90x900
machine-$(CONFIG_ARCH_ZYNQ) += zynq
machine-$(CONFIG_FOOTBRIDGE) += footbridge
machine-$(CONFIG_PLAT_SPEAR) += spear
# Platform directory name. This list is sorted alphanumerically
+2
View File
@@ -5,6 +5,8 @@
# architecture-specific flags and dependencies.
#
GCOV_PROFILE := n
LDFLAGS_bootp :=-p --no-undefined -X \
--defsym initrd_phys=$(INITRD_PHYS) \
--defsym params_phys=$(PARAMS_PHYS) -T
+2
View File
@@ -37,6 +37,8 @@ ifeq ($(CONFIG_ARM_VIRT_EXT),y)
OBJS += hyp-stub.o
endif
GCOV_PROFILE := n
#
# Architecture dependencies
#
+12 -15
View File
@@ -447,22 +447,19 @@
gpmc,device-width = <2>;
gpmc,sync-clk-ps = <0>;
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <40>;
gpmc,cs-wr-off-ns = <40>;
gpmc,cs-rd-off-ns = <80>;
gpmc,cs-wr-off-ns = <80>;
gpmc,adv-on-ns = <0>;
gpmc,adv-rd-off-ns = <30>;
gpmc,adv-wr-off-ns = <30>;
gpmc,we-on-ns = <5>;
gpmc,we-off-ns = <25>;
gpmc,oe-on-ns = <2>;
gpmc,oe-off-ns = <20>;
gpmc,access-ns = <20>;
gpmc,wr-access-ns = <40>;
gpmc,rd-cycle-ns = <40>;
gpmc,wr-cycle-ns = <40>;
gpmc,wait-pin = <0>;
gpmc,wait-on-read;
gpmc,wait-on-write;
gpmc,adv-rd-off-ns = <60>;
gpmc,adv-wr-off-ns = <60>;
gpmc,we-on-ns = <10>;
gpmc,we-off-ns = <50>;
gpmc,oe-on-ns = <4>;
gpmc,oe-off-ns = <40>;
gpmc,access-ns = <40>;
gpmc,wr-access-ns = <80>;
gpmc,rd-cycle-ns = <80>;
gpmc,wr-cycle-ns = <80>;
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,clk-activation-ns = <0>;
+10 -2
View File
@@ -423,10 +423,14 @@
status = "disabled";
lvds-channel@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
status = "disabled";
port {
port@0 {
reg = <0>;
lvds0_in: endpoint {
remote-endpoint = <&ipu_di0_lvds0>;
};
@@ -434,10 +438,14 @@
};
lvds-channel@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
status = "disabled";
port {
port@1 {
reg = <1>;
lvds1_in: endpoint {
remote-endpoint = <&ipu_di1_lvds1>;
};
+3 -3
View File
@@ -40,7 +40,7 @@ clocks {
#clock-cells = <0>;
compatible = "ti,keystone,psc-clock";
clocks = <&chipclk16>;
clock-output-names = "usb";
clock-output-names = "usb1";
reg = <0x02350004 0xb00>, <0x02350000 0x400>;
reg-names = "control", "domain";
domain-id = <0>;
@@ -60,8 +60,8 @@ clocks {
#clock-cells = <0>;
compatible = "ti,keystone,psc-clock";
clocks = <&chipclk12>;
clock-output-names = "pcie";
reg = <0x0235006c 0xb00>, <0x02350000 0x400>;
clock-output-names = "pcie1";
reg = <0x0235006c 0xb00>, <0x02350048 0x400>;
reg-names = "control", "domain";
domain-id = <18>;
};

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